fix: side peek des bases repasse en vanilla JS + largeur 1100px standard (v7.49.0)

- Panneau peek: les bindings Alpine (x-data absent du conteneur) rendaient
  loovverture et le redimensionnement inoperants -> cblage direct sur le document.
- Helper unique window.fdWirePeekResize (app.js): pointer capture, 300px-90vw,
  clic=fermer, largeur persiste fd_peek_width partagee entre les 4 peeks.
- database-table-container margin:0 (tableau colle a gauche, marge Library).
- .lib-container remonte dans app.css (trash etait pleine largeur), .db-index 1100px.
- ObsiGate verifie sans code: creation .xlsx OK (openpyxl, #186).

app/auth/session.py

@@ -13,6 +13,19 @@ logger = logging.getLogger(__name__)
 
 _serializer = URLSafeTimedSerializer(settings.app_secret_key)
 
+# Colonnes de la table ``users`` qui ne doivent JAMAIS quitter le serveur :
+# le cookie de session est signé (HMAC) mais pas chiffré — son payload est
+# lisible en base64 par quiconque détient le cookie, et ``/auth/user`` le
+# renvoyait tel quel au client.
+_SECRET_USER_FIELDS = ("password_hash",)
+
+
+def public_user(user_data: dict | None) -> dict | None:
+    """Return a copy of ``user_data`` stripped of credential material."""
+    if user_data is None:
+        return None
+    return {k: v for k, v in user_data.items() if k not in _SECRET_USER_FIELDS}
+
 
 class SessionManager:
     """Manages user sessions via signed cookies (v5.2.0: revocable).
@@ -30,7 +43,7 @@ class SessionManager:
         ``user_sessions`` table (ip + user agent) and becomes revocable.
         """
         payload = {
-            "user": user_data,
+            "user": public_user(user_data),
             "created_at": datetime.now(UTC).replace(tzinfo=None).isoformat(),
         }
         user_id = user_data.get("id")
@@ -93,7 +106,7 @@ class SessionManager:
         """Re-sign a cookie keeping its session id (used after profile edits)."""
         sid = SessionManager.session_id(cookie) if cookie else None
         payload = {
-            "user": user_data,
+            "user": public_user(user_data),
             "created_at": datetime.now(UTC).replace(tzinfo=None).isoformat(),
         }
         user_id = user_data.get("id")